Cdk5
D. melanogaster
Cyclin-dependent kinase 5
What the model saw
Gene: Cdk5 Organism: Drosophila melanogaster Known functions: Cyclin-dependent kinase 5. ATP binding. cyclin-dependent protein serine/threonine kinase activity. protein binding. protein kinase activity. protein serine kinase activity. protein serine/threonine kinase activity.
View unredacted entry
Cyclin-dependent kinase 5. ATP binding. cyclin-dependent protein serine/threonine kinase activity. protein binding. protein kinase activity. protein serine kinase activity. protein serine/threonine kinase activity.
Solver output
CDK5 is an atypical cyclin-dependent kinase that, unlike canonical CDKs, is primarily active in post-mitotic cells (notably neurons) and is activated by non-cyclin activators p35/p25. In aging contexts, aberrant or hyperactivated CDK5 (particularly via the truncated p25 activator) drives pathological phosphorylation of substrates such as tau, leading to neurofibrillary tangle-like pathology, neuronal dysfunction, and accelerated neurodegeneration. In Drosophila, CDK5 activity has been linked to synaptic dysfunction and neuronal aging phenotypes. Its serine/threonine kinase activity, when dysregulated, promotes cellular damage rather than repair, contributing to age-associated neuronal decline. Additionally, CDK5 can phosphorylate and modulate senescence-related pathways, making its normal (and especially its overactive) function a driver of aging rather than a suppressor.
GenAge curators classify each gene's normal function as promoting (Pro-Longevity) or opposing (Anti-Longevity) longevity, based on synthesis across studies. Loss-of-function effects can vary from this depending on the manipulation.
Advisor judgment
The model predicted anti_longevity while the ground truth is pro_longevity. The model's reasoning focused on CDK5's pathological role in neurodegeneration (via p25/tau hyperphosphorylation), which is a well-known mammalian aging mechanism, but this doesn't appear to reflect the actual role of Cdk5 in Drosophila longevity. The model extrapolated from mammalian neurodegenerative disease contexts to Drosophila aging, which led to an incorrect prediction. The mechanism described (cellular senescence, tau pathology) is also likely incorrect for the Drosophila context where Cdk5 appears to be pro-longevity. The model showed moderate confidence (0.65) but was still wrong on both the direction and likely the mechanism.
Raw API responses
solver
{
"reasoning": "CDK5 is an atypical cyclin-dependent kinase that, unlike canonical CDKs, is primarily active in post-mitotic cells (notably neurons) and is activated by non-cyclin activators p35/p25. In aging contexts, aberrant or hyperactivated CDK5 (particularly via the truncated p25 activator) drives pathological phosphorylation of substrates such as tau, leading to neurofibrillary tangle-like pathology, neuronal dysfunction, and accelerated neurodegeneration. In Drosophila, CDK5 activity has been linked to synaptic dysfunction and neuronal aging phenotypes. Its serine/threonine kinase activity, when dysregulated, promotes cellular damage rather than repair, contributing to age-associated neuronal decline. Additionally, CDK5 can phosphorylate and modulate senescence-related pathways, making its normal (and especially its overactive) function a driver of aging rather than a suppressor.",
"confidence": 0.65,
"key_pathways": [
"CDK5/p35-p25 neurodegeneration pathway",
"tau hyperphosphorylation",
"neuronal senescence signaling"
],
"mechanism_class": "cellular_senescence",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model predicted anti_longevity while the ground truth is pro_longevity. The model's reasoning focused on CDK5's pathological role in neurodegeneration (via p25/tau hyperphosphorylation), which is a well-known mammalian aging mechanism, but this doesn't appear to reflect the actual role of Cdk5 in Drosophila longevity. The model extrapolated from mammalian neurodegenerative disease contexts to Drosophila aging, which led to an incorrect prediction. The mechanism described (cellular senescence, tau pathology) is also likely incorrect for the Drosophila context where Cdk5 appears to be pro-longevity. The model showed moderate confidence (0.65) but was still wrong on both the direction and likely the mechanism.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}